Database identifiers can be enclosed in the square bracket syntax as shown in the following examples.
[foo]=>#<SQL-IDENT "FOO">SELECT FOO FROM BAR. [foo bar]=>#<SQL-IDENT "FOO.BAR">SELECT FOO.BAR FROM FOO ["foo" bar] =>#<SQL-IDENT "\"foo\".BAR">SELECT "foo".BAR FROM BAZ "foo". [foo "bar"] =>#<SQL-IDENT FOO \"bar\">SELECT "bar".* FROM FOO "bar". [foo :integer] =>#<SQL-IDENT "FOO" :INTEGER>[foo bar :integer] -->#<SQL-IDENT "FOO.BAR" :INTEGER>["foo" bar :integer] -->#<SQL-IDENT "\"foo\".BAR" :INTEGER>